Top 100 Contractors in PSC 63: Alarm, Signal, Security Detection, FY2024

Name: Top 100 Contractors in PSC 63: Alarm, Signal, Security Detection, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 59% of FY2024 PSC 63 contract dollars

Contract obligations: $634,368,493 Net of deobligations, by contracts coded PSC 63 or a code under it
Contractors: 703 Parent companies with an obligation
Largest contractor: Smiths Detection, Inc. $114 million, 17.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Smiths Detection, Inc. 2 awardees Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) AOUSC (Administrative Office of the U.S. Courts)	$114,046,178	17.4%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
2	M. C. Dean Inc. Through M.c. Dean, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DOT (Department of Transportation) USAF (Department of the Air Force)	$56,338,391	8.6%	Rank history: #8 in FY2021, #4 in FY2022, #2 in FY2023 and #1 in FY2025; unchanged since FY2023.
3	Leidos Security Detection & Automation, Inc. Top agencies DHS (Department of Homeland Security) SSA (Social Security Administration)	$44,950,421	6.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
4	Analogic Corporation 2 awardees Top agencies DHS (Department of Homeland Security)	$37,019,539	5.7%	Rank history: #1 in FY2021, #1 in FY2022, #9 in FY2023 and #4 in FY2025; up 5 since FY2023.
5	Evergreen Fire Alarms LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$34,812,684	5.3%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and #3 in FY2025; up 91 since FY2023.
6	Minuteman Security Solutions LLC Top agencies Army (Department of the Army)	$27,623,460	4.2%	Rank history: #4 in FY2021, #5 in FY2022, #6 in FY2023 and #10 in FY2025; unchanged since FY2023.
7	Pendar Technologies LLC Top agencies DHS (Department of Homeland Security)	$23,151,608	3.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
8	Evigilant.com, LLC Top agencies AOUSC (Administrative Office of the U.S. Courts)	$19,502,407	3.0%	Rank history: #7 in FY2021, #2 in FY2022, #4 in FY2023 and #32 in FY2025; down 4 since FY2023.
9	Parsons Corporation 3 awardees, including Parsons Government Services International Inc., Xator LLC and Williams Electric Co Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) AOUSC (Administrative Office of the U.S. Courts)	$16,011,642	2.4%	Rank history: #25 in FY2021, #25 in FY2022, #45 in FY2023 and #5 in FY2025; up 36 since FY2023.
10	Idemia Identity & Security USA LLC Top agencies DHS (Department of Homeland Security)	$14,649,095	2.2%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
11	Versar Security Systems, LLC Top agencies DOT (Department of Transportation) AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice)	$13,879,494	2.1%	Rank history: not on the FY2021 list, #21 in FY2022, #27 in FY2023 and #39 in FY2025; up 16 since FY2023.
12	L3Harris Technologies, Inc. 3 awardees, including L3 Technologies, Inc. and L3Harris Maritime Services Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$13,173,248	2.0%	Rank history: #35 in FY2021, #23 in FY2022, #17 in FY2023 and #13 in FY2025; up 5 since FY2023.
13	Scdatacom LLC Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$13,139,682	2.0%	Rank history: #86 in FY2021, #29 in FY2022, #40 in FY2023 and #11 in FY2025; up 27 since FY2023.
14	Johnson Controls Security Solutions LLC 4 awardees, including Johnson Controls Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$12,535,027	1.9%	Rank history: #9 in FY2021, #8 in FY2022, #7 in FY2023 and #17 in FY2025; down 7 since FY2023.
15	CACI International Inc. 3 awardees, including Caci, Inc. - Federal and Caci Nss, LLC Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$11,159,822	1.7%	Rank history: #10 in FY2021, #52 in FY2022, #13 in FY2023 and #9 in FY2025; down 2 since FY2023.
16	Johnson Controls Building Automation Systems, LLC Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$9,814,686	1.5%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2025; new.
17	Atlantic Diving Supply, Inc. Top agencies DOS (Department of State) USAF (Department of the Air Force) Army (Department of the Army)	$9,765,783	1.5%	Rank history: not on the FY2021–FY2023 lists and #89 in FY2025; new.
18	Anduril Industries Inc. Top agencies USAF (Department of the Air Force)	$8,913,966	1.4%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023 and #18 in FY2025; down 15 since FY2023.
19	Rapiscan Systems Inc Top agencies DOS (Department of State) DTRA (Defense Threat Reduction Agency) DOJ (Department of Justice)	$8,568,475	1.3%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; new.
20	V2X, Inc. Through Advantor Systems II LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$6,874,780	1.1%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
21	Signet Technologies, Inc. 3 awardees, including Convergint Technologies LLC Top agencies AOUSC (Administrative Office of the U.S. Courts) Peace Corps USAF (Department of the Air Force)	$5,926,851	0.9%	Rank history: #12 in FY2021, #9 in FY2022, #20 in FY2023 and #30 in FY2025; down 1 since FY2023.
22	Indyne, Inc. Top agencies USAF (Department of the Air Force)	$4,970,566	0.8%	Rank history: not on the FY2021 list, #20 in FY2022, #35 in FY2023 and #21 in FY2025; up 13 since FY2023.
23	L3HARRIS Aviation Products Inc 2 awardees, including L3 Technologies, Inc. Top agencies USAF (Department of the Air Force)	$4,752,304	0.7%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023 and not on the FY2025 list; up 26 since FY2023.
24	Smiths Group PLC Through Smiths Detection Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$3,797,652	0.6%	Rank history: #2 in FY2021, #3 in FY2022, #1 in FY2023 and not on the FY2025 list; down 23 since FY2023.
25	Xator LLC 2 awardees, including Incadence Strategic Solutions LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$3,604,612	0.6%	Rank history: not on the FY2021 list, #22 in FY2022, #10 in FY2023 and not on the FY2025 list; down 15 since FY2023.
26	RTX Corporation 10 awardees, including Kidde Technologies, Inc., Rosemount Aerospace Inc. and Hornet Acquisitionco, LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$3,583,747	0.5%	Rank history: #16 in FY2021, #30 in FY2022, #21 in FY2023 and #24 in FY2025; down 5 since FY2023.
27	Ceia USA Ltd Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) AOUSC (Administrative Office of the U.S. Courts)	$3,482,066	0.5%	Rank history: #32 in FY2021, #33 in FY2022, #25 in FY2023 and #31 in FY2025; down 2 since FY2023.
28	Idemia National Security Solutions LLC Top agencies Navy (Department of the Navy)	$3,335,765	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency)	$3,124,187	0.5%	Rank history: #17 in FY2021, #14 in FY2022, #16 in FY2023 and #15 in FY2025; down 13 since FY2023.
30	Global Grab Technologies, Inc. Top agencies DHS (Department of Homeland Security)	$2,998,755	0.5%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and not on the FY2025 list; up 34 since FY2023.
31	Nitor Technologies Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,915,224	0.4%	Rank history: #46 in FY2021, not on the FY2022–FY2023 lists and #66 in FY2025; up 213 since FY2023.
32	General Dynamics Corporation 2 awardees, including General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$2,843,926	0.4%	Rank history: #20 in FY2021, #11 in FY2022, #12 in FY2023 and #27 in FY2025; down 20 since FY2023.
33	Supply King Usa, LLC Top agencies DOJ (Department of Justice)	$2,779,066	0.4%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and not on the FY2025 list; up 19 since FY2023.
34	Heritage Interiors LLC Top agencies DOT (Department of Transportation)	$2,692,544	0.4%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2025; up 99 since FY2023.
35	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$2,284,880	0.3%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; up 230 since FY2023.
36	Kwangmu Co.,Ltd. Top agencies Army (Department of the Army)	$2,093,222	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
37	Shofar Communications LLC Top agencies USAF (Department of the Air Force)	$2,009,944	0.3%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023 and #95 in FY2025; up 18 since FY2023.
38	Ch2M Hill, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$2,000,000	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
39	Primary Systems Inc. Top agencies VA (Department of Veterans Affairs)	$1,985,300	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	Integrated Security Technologies, Inc. Top agencies DHS (Department of Homeland Security)	$1,963,155	0.3%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and #25 in FY2025; up 34 since FY2023.
41	Cynergy Professional Systems LLC Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$1,741,650	0.3%	Rank history: #44 in FY2021, #10 in FY2022, #38 in FY2023 and #50 in FY2025; down 3 since FY2023.
42	Ldia Holdings, LLC Top agencies USAF (Department of the Air Force)	$1,706,769	0.3%	Rank history: not on the FY2021 list, #42 in FY2022, #79 in FY2023 and #26 in FY2025; up 37 since FY2023.
43	Advanced Scientific Concepts, LLC Top agencies Navy (Department of the Navy)	$1,641,988	0.3%	Rank history: #33 in FY2021, #19 in FY2022, #33 in FY2023 and #34 in FY2025; down 10 since FY2023.
44	Siemens Industry Inc. Top agencies VA (Department of Veterans Affairs) DOE (Department of Energy) DOT (Department of Transportation)	$1,547,003	0.2%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2025; new.
45	Allied Defense Industries, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,509,896	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
46	HQE Systems Inc. Top agencies USAF (Department of the Air Force)	$1,398,292	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
47	Lockheed Martin Corporation 3 awardees, including Sikorsky Aircraft Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,387,018	0.2%	Rank history: not on the FY2021 list, #97 in FY2022, not on the FY2023 list and #78 in FY2025; up 327 since FY2023.
48	Ruta Supplies Inc. Top agencies DLA (Defense Logistics Agency)	$1,308,801	0.2%	Rank history: #82 in FY2021, #61 in FY2022, not on the FY2023 list and #42 in FY2025; up 200 since FY2023.
49	Monaco Enterprises, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHS (Department of Homeland Security)	$1,250,071	0.2%	Rank history: #60 in FY2021, #38 in FY2022, #31 in FY2023 and #29 in FY2025; down 18 since FY2023.
50	Red Peak Technical Services, LLC Top agencies USAF (Department of the Air Force)	$1,209,223	0.2%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
51	Axon Enterprise, Inc. Top agencies VA (Department of Veterans Affairs)	$1,075,283	0.2%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; new.
52	GJB and Associates LLC Top agencies Navy (Department of the Navy)	$998,574	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Geospace Technologies Corporation Through Quantum Technology Sciences, Inc. Top agencies DHS (Department of Homeland Security)	$997,682	0.2%	Rank history: #74 in FY2021, #76 in FY2022, #77 in FY2023 and #43 in FY2025; up 24 since FY2023.
54	Zenn Group LLC Top agencies DHS (Department of Homeland Security)	$963,602	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	Honeywell International Inc. 2 awardees Top agencies Army (Department of the Army) DOI (Department of the Interior)	$928,946	0.1%	Rank history: #52 in FY2021, #31 in FY2022, #29 in FY2023 and not on the FY2025 list; down 26 since FY2023.
56	Dynalec Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$918,390	0.1%	Rank history: #54 in FY2021, #54 in FY2022, #47 in FY2023 and #41 in FY2025; down 9 since FY2023.
57	S I T Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$869,443	0.1%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and not on the FY2025 list; up 14 since FY2023.
58	Kastle Systems LLC Top agencies SEC (Securities and Exchange Commission) FEC (Federal Election Commission) Treasury (Department of the Treasury)	$851,710	0.1%	Rank history: #36 in FY2021, #53 in FY2022, #58 in FY2023 and not on the FY2025 list; unchanged since FY2023.
59	LC3 Solutions, Limited Liability Company Top agencies DHS (Department of Homeland Security)	$836,750	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	Intellimar Inc. Top agencies DHS (Department of Homeland Security) National Gallery of Art	$817,797	0.1%	Rank history: not on the FY2021 list, #37 in FY2022, #54 in FY2023 and #46 in FY2025; down 6 since FY2023.
61	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$768,490	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
62	Digital Force Technologies, LLC Top agencies USAF (Department of the Air Force)	$754,200	0.1%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023 and not on the FY2025 list; down 20 since FY2023.
63	Gans & Pugh Associates, Inc. Top agencies Army (Department of the Army) DOJ (Department of Justice)	$752,688	0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and not on the FY2025 list; up 23 since FY2023.
64	California Marine Supply Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$751,840	0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023 and not on the FY2025 list; up 3 since FY2023.
65	Northrop Grumman Corporation 5 awardees, including Remotec, Inc. and Northrop Grumman Systems Corporation Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$706,374	0.1%	Rank history: #63 in FY2021, #83 in FY2022, not on the FY2023 list and not on the FY2025 list; up 198 since FY2023.
66	Hose-Mccann Telephone Co, Inc. Top agencies DLA (Defense Logistics Agency)	$697,067	0.1%	Rank history: #96 in FY2021, #73 in FY2022, #75 in FY2023 and #60 in FY2025; up 9 since FY2023.
67	Surescan Corporation Top agencies DHS (Department of Homeland Security)	$686,727	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
68	Communications Resource Inc. Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security)	$676,484	0.1%	Rank history: #24 in FY2021, #63 in FY2022, #44 in FY2023 and not on the FY2025 list; down 24 since FY2023.
69	Alabama Controls, Inc. Top agencies USAF (Department of the Air Force)	$665,034	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
70	Applied Research Associates, Inc. Top agencies USAF (Department of the Air Force)	$653,570	0.1%	Rank history: #70 in FY2021, #48 in FY2022, #66 in FY2023 and #33 in FY2025; down 4 since FY2023.
71	M.d. Marine Electric, Ltd Top agencies DHS (Department of Homeland Security)	$646,090	0.1%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
72	Sentinel Offender Services LLC Top agencies CSOSA (Court Services and Offender Supervision Agency)	$634,918	0.1%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
73	Essnova Solutions Inc. Top agencies Navy (Department of the Navy)	$619,990	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	Emcor Group Inc. Through Dynalec Corporation Top agencies DLA (Defense Logistics Agency)	$610,829	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Barcom Electronic Inc. Top agencies VA (Department of Veterans Affairs)	$606,616	0.1%	Rank history: #91 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 134 since FY2023.
76	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$604,569	0.1%	Rank history: #92 in FY2021, not on the FY2022–FY2023 lists and #92 in FY2025; up 171 since FY2023.
77	KBR Wyle Services LLC Top agencies AOUSC (Administrative Office of the U.S. Courts)	$593,119	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	Federal Resources Supply Company, LLC Top agencies DOS (Department of State)	$583,544	0.1%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2025; new.
79	Marine Electric Systems Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$566,002	0.1%	Rank history: #98 in FY2021, #84 in FY2022, not on the FY2023 list and #73 in FY2025; up 72 since FY2023.
80	Mandex Inc. Top agencies Navy (Department of the Navy)	$557,930	0.1%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2025; new.
81	Clark Security & Services LLC Top agencies DHS (Department of Homeland Security)	$540,480	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	State Systems, LLC Top agencies DOJ (Department of Justice)	$531,575	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
83	Vindicator Technologies, Inc. Top agencies USAF (Department of the Air Force)	$512,627	0.1%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; new.
84	Versar Inc. Through Versar Security Systems, LLC Top agencies DOT (Department of Transportation) AOUSC (Administrative Office of the U.S. Courts)	$503,785	0.1%	Rank history: #11 in FY2021, #13 in FY2022, #22 in FY2023 and not on the FY2025 list; down 62 since FY2023.
85	Elbit Systems Ltd 2 awardees, including Elbitamerica, Inc. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force)	$489,251	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 195 since FY2023.
86	Genasys Inc. Top agencies DOI (Department of the Interior)	$488,955	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	Aarcorp Through AAR Supply Chain, Inc. Top agencies DLA (Defense Logistics Agency)	$479,630	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Firelake Construction Inc 2 awardees Top agencies Army (Department of the Army)	$437,414	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 38 since FY2023.
89	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$434,743	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 346 since FY2023.
90	OSI Systems Inc. Through Rapiscan Systems Inc. Top agencies DOJ (Department of Justice)	$429,768	0.1%	Rank history: #19 in FY2021, #6 in FY2022, #26 in FY2023 and not on the FY2025 list; down 64 since FY2023.
91	Secsol Inc. Top agencies VA (Department of Veterans Affairs)	$424,581	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Astrophysics Inc. Top agencies USAF (Department of the Air Force) DCMA (Defense Contract Management Agency) DOJ (Department of Justice)	$423,614	0.1%	Rank history: not on the FY2021 list, #45 in FY2022, #88 in FY2023 and not on the FY2025 list; down 4 since FY2023.
93	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies AOUSC (Administrative Office of the U.S. Courts)	$422,765	0.1%	Rank history: #14 in FY2021, #69 in FY2022, #19 in FY2023 and not on the FY2025 list; down 74 since FY2023.
94	Cahoon & Associates LLC Top agencies VA (Department of Veterans Affairs)	$419,858	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	Security Install Solutions, Inc. Top agencies GSA (General Services Administration)	$410,773	0.1%	Rank history: #84 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 162 since FY2023.
96	Inter-Pacific Inc Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$406,645	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 102 since FY2023.
97	Mirion Technologies (CAPINTEC) Inc. Through Mirion Technologies (Canberra), Inc. Top agencies DHS (Department of Homeland Security)	$406,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Benz Companies Ltd Top agencies DHS (Department of Homeland Security)	$391,872	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 48 since FY2023.
99	Vicon Industries, Inc. Top agencies USAF (Department of the Air Force)	$389,620	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
100	Northeast Protection Partners, Inc. Top agencies DHA (Defense Health Agency)	$381,244	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 703 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC 63

Code	Net obligations	Largest contractor
6350 Miscellaneous Alarm, Signal, and Security Detection Systems	$596,513,246	Smiths Detection, Inc.
6340 Aircraft Alarm and Signal Systems	$29,190,398	L3Harris Technologies, Inc.
6310 Traffic and Transit Signal Systems	$4,523,807	Global Grab Technologies, Inc.
6320 Shipboard Alarm and Signals Systems	$4,141,043	Ruta Supplies Inc.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $654 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2024 ran Oct 1, 2023 – Sep 30, 2024. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2023. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2023 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC 63 contractors in FY2024?

1. Smiths Detection, Inc. ($114M), 2. M. C. Dean Inc. ($56.3M), 3. Leidos Security Detection & Automation, Inc. ($45M), 4. Analogic Corporation ($37M), 5. Evergreen Fire Alarms LLC ($34.8M), 6. Minuteman Security Solutions LLC ($27.6M), 7. Pendar Technologies LLC ($23.2M), 8. Evigilant.com, LLC ($19.5M), 9. Parsons Corporation ($16M), 10. Idemia Identity & Security USA LLC ($14.6M).

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